CN101800028B - Display device, operating method and lighting device - Google Patents
Display device, operating method and lighting device Download PDFInfo
- Publication number
- CN101800028B CN101800028B CN201010111819.7A CN201010111819A CN101800028B CN 101800028 B CN101800028 B CN 101800028B CN 201010111819 A CN201010111819 A CN 201010111819A CN 101800028 B CN101800028 B CN 101800028B
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- emitting diode
- light emitting
- width modulation
- display device
- signal
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
Abstract
An indicator apparatus, having a pulse width modulation circuit (1), a demultiplexer (2) which has at least one signal input (21) and at least two signal outputs (22), wherein the signal input (21) is connected to the pulse width modulation circuit (1), and at least two light-emitting diodes (3) which are each connected to a signal output (22) of the demultiplexer.
Description
Technical field
The present invention proposes a kind of display device.In addition, the invention allows for a kind of for driving the method for this display device.Finally, the present invention proposes a kind of lighting device with this display device and at least one lamp.
Summary of the invention
A task that will solve is, proposes a kind of display device, and it can economize on electricity especially and work.Another task that will solve is to propose a kind of for driving the method for the special economize on electricity of display device.
The present invention proposes a kind of display device.By this display device for example likely, the duty that shows the equipment connecting.This display device can be a part for operating means at this, and user can and control this equipment by this operating means operation.
According at least one form of implementation of display device, display device comprises pulse-width modulation circuit.This pulse-width modulation circuit produces pulse-width signal.Pulse-width signal has turn-on time, and the equipment connecting in this turn-on time is supplied with electric current by pulse-width modulation circuit, and has the turn-off time, and the equipment connecting in this turn-off time is not for example supplied to electric current.
According at least one form of implementation of display device, display device has demodulation multiplexer.This demodulation multiplexer comprises at least one signal input part and at least two signal output parts.For example, demodulation multiplexer comprises a lucky signal input part and a plurality of signal output part.Under any circumstance, demodulation multiplexer all comprises than the more signal output part of signal input part.By demodulation multiplexer, by input signal be connected to a plurality of output terminals proper what a.
According at least one form of implementation of display device, demodulation multiplexer is connected with pulse-width modulation circuit on its signal input part.That is to say, the signal of the width modulation being produced by pulse-width modulation circuit is fed in demodulation multiplexer by signal input part.
According at least one form of implementation of display device, this display device comprises at least two light emitting diodes, and they are connected with the signal output part of demodulation multiplexer respectively.That is to say, light emitting diode provides working current by demodulation multiplexer.Demodulation multiplexer is connected to the input signal of pulse-width modulation circuit one of signal output part being connected with light emitting diode.In this way, then this light emitting diode with the signal feed of width modulation.
According at least one form of implementation of display device, this display device comprises pulse-width modulation circuit and demodulation multiplexer, and this demodulation multiplexer has at least one signal input part and at least two signal output parts, and wherein this signal input part is connected with pulse-width modulation circuit.In addition, this display device comprises at least two light emitting diodes, and they are connected with the signal output part of demodulation multiplexer respectively.
At this, display device described herein has especially been utilized following thought: display case can have a plurality of light emitting diodes for display working condition as the display device of the duty of the equipment of a plurality of connections.If present whole light emitting diode feeds to display device, this display device has higher power consumption.
Display device as described herein is now especially based on following understanding: the light emitting diode of (due to human eye slow) display device needn't necessarily be driven simultaneously, to cause at observer place impression that their are simultaneously luminous.Or rather, only drive one of light emitting diode respectively and remaining light emitting diode is not enough by feed.
If the light emitting diode of display device is alternately driven separately and the driving of light emitting diode is carried out with order fast, observer, locate to form following impression: all light emitting diodes of display device are simultaneously luminous.Yet in fact distinguish an only lumination of light emitting diode, so power consumption is reduced to n/mono-of the power consumption that display device can have when all light emitting diodes are worked simultaneously, wherein n is the number of the light emitting diode of display device.
According at least one form of implementation of display device, demodulation multiplexer has control input end, and it is connected with the control input end of pulse-width modulation circuit.Connection by demodulation multiplexer and pulse-width modulation circuit likely, and demodulation multiplexer and pulse-width modulation circuit is synchronized with each other.Each light emitting diode that in this way, for example can guarantee display device is with the signal driver for the definite width modulation of this light emitting diode.In addition can guarantee, demodulation multiplexer is from a signal output part to the switching of next signal output terminal, carry out the turn-off time that switches in pulse-width signal from a light emitting diode to next light emitting diode.In this way, it is when connecting light emitting diode, can avoid uncomfortable flash of light.
According at least one form of implementation of display device, each light emitting diode of this display device comprises at least two light-emitting diode chip for backlight unit.For example, each light emitting diode comprises the light-emitting diode chip for backlight unit of a red-emitting, the light-emitting diode chip for backlight unit of the light-emitting diode chip for backlight unit of a transmitting green light and a transmitting blue light.Each light-emitting diode chip for backlight unit is connected with the signal output part of demodulation multiplexer one to one at this.That is to say, in this form of implementation, each signal output part of demodulation multiplexer is just associated with a light-emitting diode chip for backlight unit, and each light-emitting diode chip for backlight unit is just associated with a signal output part of demodulation multiplexer.In this way likely, the light-emitting diode chip for backlight unit of light emitting diode can be worked independently of one another.So, for example, definite chromaticity coordinate of the light of light emitting diode generation can be set by RGB light emitting diode.
According at least one form of implementation of display device, the power consumption of this display device is up to 0.5W.At this, this display device comprises eight or more light emitting diode.This realizes especially in the following way: the light emitting diode of this display device is not simultaneously driven, but sequentially driven.
In addition, proposed a kind ofly for driving the method for display device, this display device has at least two light emitting diodes.This display device can be for example display device as described herein.That is to say, also can be open in combination with the method for driving display device in conjunction with the described all features of display device, vice versa.
According at least one form of implementation of the method, the method has following method step: according to the method step, produce the signal of width modulation, this signal has turn-on time and turn-off time.Especially, the signal of width modulation has a plurality of turn-on times and turn-off time, and they for example periodically each other in succession.
For example, at least two light emitting diodes drive by the signal of width modulation.
In turn-on time, so one of light emitting diode carrys out feed with forward voltage, in the turn-off time this light emitting diode not by feed, or its with cut-off the little strength of current in direction carry out feed.The signal of this width modulation produces by pulse-width modulation circuit at this.
According at least one form of implementation of the method, the method comprises following method step: according to the method step by the signal guidance of width modulation to demodulation multiplexer.For example, the signal output part of pulse-width modulation circuit is connected with the signal input part of demodulation multiplexer for this reason.
According at least one form of implementation of the method, the method comprises following method step: wherein that pulse-width modulation circuit and demodulation multiplexer is synchronous, and make the signal of width modulation at a light emitting diode at least two light emitting diodes described in demodulation multiplexer guides to during the turn-off time.That is to say, demodulation multiplexer is for example sequentially connected the light emitting diode of display device and they is connected with one of signal output part of demodulation multiplexer respectively.At this, preferably during the turn-off time of the signal of width modulation, carry out the switching from a light emitting diode to another light emitting diode.In this way, can avoid the uncomfortable flash of light of making us when the switching from a light emitting diode to next light emitting diode.
That is to say, according to the method form of implementation, from a light emitting diode to the switching of next light emitting diode, do not occur flash of light.The just connection after the switching of the signal by width modulation in time of next light emitting diode, and at the light emitting diode from before to the transfer period of next light emitting diode and disconnect.
According to for driving at least one form of implementation of the method for the display device that comprises at least two light emitting diodes, the method particularly comprises the following steps in the following order:
-by pulse-width modulation circuit, producing the signal of width modulation, this signal has turn-on time and turn-off time,
-by the signal guidance of width modulation to demodulation multiplexer,
-pulse-width modulation circuit and demodulation multiplexer is synchronous, make the signal of width modulation at a light emitting diode at least two light emitting diodes described in demodulation multiplexer guides to during the turn-off time.
According at least one form of implementation of the method, light emitting diode one of at least has at least two light-emitting diode chip for backlight unit.For example, whole light emitting diodes of display device are so-called RGB light emitting diodes, and they comprise respectively light-emitting diode chip for backlight unit, the transmitting light-emitting diode chip for backlight unit of blue light and the light-emitting diode chip for backlight unit of transmitting green light of red-emitting.For each light-emitting diode chip for backlight unit, this by the signal guidance of width modulation to light emitting diode.At this likely, each light-emitting diode chip for backlight unit to light emitting diode by the signal guidance of width modulation is driven the light-emitting diode chip for backlight unit of light emitting diode simultaneously simultaneously.In this case, pulse-width modulation circuit is for example suitable for producing the signal of three kinds of different width modulations simultaneously.When being switched to next light emitting diode from a light emitting diode, so the signal of three width modulations is placed in three secondary signal output terminals of demodulation multiplexer from three first signal output terminals of demodulation multiplexer.
Alternatively also possible that, sequentially drive the light-emitting diode chip for backlight unit of light emitting diode.That is to say, demodulation multiplexer not merely interconnects between each light emitting diode, but interconnects between each light-emitting diode chip for backlight unit.In this way, can drive display device, because only distinguish single light-emitting diode chip for backlight unit feed in the regular hour especially energy-conservationly.
According at least one form of implementation of the method, at least two light emitting diodes described in the signal of width modulation is sequentially guided to by demodulation multiplexer.That is to say, the light emitting diode of this display device is driven in succession individually, does not have the light emitting diode of display device and other light emitting diodes of display device to be driven simultaneously.At this, as firm explanation, also possible that, the light-emitting diode chip for backlight unit of light emitting diode is driven equally individually.
According at least one form of implementation of the method, the light-emitting diode chip for backlight unit of described at least two light emitting diodes of display device drives with the strength of current of maximum permission respectively during the turn-on time of the signal of width modulation.Due to the light emitting diode of this display device and/or the driving of the order of light-emitting diode chip for backlight unit, so the light being produced by these light emitting diodes is driven to compare with all light emitting diodes simultaneously, show on the whole so not brightly.
In order to compensate this luminance difference, light emitting diode drives with the strength of current for its maximum permission at its driven short time durations.Because the driving of light emitting diode or light-emitting diode chip for backlight unit is only carried out all the time in short-term, thus hardly or can not affect negatively life-span of light emitting diode even completely.On the other hand, by this measure, compensated consumingly because order drives the luminance loss who causes, made can determine hardly for observer that brightness reduces.
In addition, a kind of lighting device and display device have been proposed.Preferably, at this, relate to display device as described herein, the described whole feature that makes to combine with display device also can be open in combination with lighting device.
Lighting device also comprises at least one lamp except display device, and this lamp is connected with display device, and wherein display device is designed to show the duty of described at least one lamp.At this also possible that, display device for example demonstrates the following characteristics of the light of lamp generation: chromaticity coordinate, colour temperature and/or brightness.
Accompanying drawing explanation
To further set forth display device as described herein, as described herein for driving method and the lighting device as described herein of display device by embodiment and accompanying drawing below.
In the accompanying drawings, identical, similarly or act on identical element and be provided with identical Reference numeral.Accompanying drawing and in the accompanying drawings shown in element between magnitude relationship can not be considered as conforming with ratio.Or rather, for clearer and/or each element can be shown large for better understanding.
Fig. 1 has illustrated the first embodiment of display device as described herein by schematic diagram;
Fig. 2 shows an embodiment of lighting device as described herein.
Embodiment
Fig. 1 has illustrated the first embodiment of display device as described herein by schematic diagram.This display device comprises pulse-width modulation circuit 1.Pulse-width modulation circuit 1 has signal output part 12 and control input end 13.
Pulse-width modulation circuit 1 produces the signal 10 of width modulation.The signal 10 of width modulation has t1 and turn-off time t2 turn-on time.For example, the signal 10 of width modulation builds by the mode of rect.p..
In addition, this display device comprises demodulation multiplexer 2.Demodulation multiplexer 2 has signal input part 21.In addition, demodulation multiplexer 2 has a plurality of signal output parts 22.Finally, demodulation multiplexer has control input end 23.
Pulse-width modulation circuit 1 and demodulation multiplexer 2 are connected to each other by the signal output part 12 of pulse-width modulation circuit 1 and the signal input part 21 of demodulation multiplexer 2.
In addition, pulse-width modulation circuit 1 is connected with the control input end 13,23 of demodulation multiplexer 2 by them.Thus, between pulse-width modulation circuit 1 and demodulation multiplexer 2, produce regulating loop 4.
In addition, this display device has a plurality of light emitting diodes 3.Light emitting diode 3 is RGB light emitting diode at this, and RGB light emitting diode has three light-emitting diode chip for backlight unit 30, and one of them produces red light, light and the light that generation is green that generation is blue at work.By signal output part 22, each of light-emitting diode chip for backlight unit 30 one to one (ein-eindeutig) is connected with demodulation multiplexer 2.That is to say, the number of signal output part 22 is for example corresponding to three times of the number of the light emitting diode 3 of display device.
In the work of display device, by pulse-width modulation circuit 1, produce the signal 10 of width modulation.The signal 10 of width modulation is fed in demodulation multiplexer 2 by signal input part 21, this demodulation multiplexer is switched to the one of lucky upper of its signal output part 22 by the signal of width modulation 10, makes the signal 20 of the width modulation that is switched on be sent to one of light-emitting diode chip for backlight unit 30.
Demodulation multiplexer 2 and pulse-width modulation circuit 1 are synchronized with each other by regulating loop 4, and the switching from a light-emitting diode chip for backlight unit 30 to next light-emitting diode chip for backlight unit 30 is carried out respectively during turn-off time t2.In this way, it is in handoff procedure, to have prevented uncomfortable flicker.Light-emitting diode chip for backlight unit 30 one after the other, sequentially with order fast, apply respectively the signal with width modulation, makes because the slow of human eye switched and do not loom large for observer.
Be different from embodiment described in conjunction with Figure 1, also possible that, pulse-width modulation circuit 1 produces the signal 10 of a plurality of width modulations, and wherein the number of signal 10 is corresponding to the number of the light-emitting diode chip for backlight unit 30 of each light emitting diode.In this way, can drive respectively the light-emitting diode chip for backlight unit 30 of single light emitting diode, the switching that makes order is not between each light-emitting diode chip for backlight unit but carry out between each light emitting diode simultaneously.
In conjunction with Fig. 2, further set forth an embodiment of lighting device as described herein.
Fig. 2 shows display device 100, as it for example elaborates in conjunction with Fig. 1.This display device 100 comprises 12 single light emitting diodes 3, after they are separately positioned on form 140.This display device comprises operational zone 31, and executive component 120 is arranged on this operational zone, and these executive components can activate by touching operational zone 31.For example, operational zone 31 is glass surfaces, and after this glass surface, capacitive switch is arranged in the region of executive component 120.Operating means with this operational zone for example have been described in detail in publication DE 10 2,005 059 067 A1 and DE 10 2,007 017335 A1, and they are incorporated herein by reference clearly.
This display device is connected with one or more lamps 200, and these lamps can have respectively a plurality of light emitting diodes 201.By the light emitting diode 3 of this display device, duty that can display lamp 200.For example, each executive component can be with just what a lamp be associated, and the duty of this lamp shows by light emitting diode 3.
The present invention is not confined to this by the description by embodiment.The present invention but comprise arbitrarily new feature and the combination in any of feature, the combination in any of the feature that particularly comprised in the claims, even if this feature or this combination itself do not describe clearly in claim or embodiment.
Present patent application requires the right of priority of German patent application 102009007504.6, and its disclosure is incorporated herein by reference.
Claims (9)
1. for driving a method for display device, this display device has at least two light emitting diodes (3), and the method comprises the following steps:
-by pulse-width modulation circuit (1), producing the signal (10) of width modulation, this signal has at least one turn-on time (t1) and at least one turn-off time (t2),
-signal of width modulation (10) is guided to demodulation multiplexer (2),
-demodulation multiplexer (2) has at least one signal input part (21) and at least two signal output parts (22), wherein signal input part (21) is connected with pulse-width modulation circuit (1), and demodulation multiplexer (2) has than the more signal output part (22) of signal input part (21)
-light emitting diode (3) is connected with the signal output part (22) of demodulation multiplexer respectively,
-pulse-width modulation circuit (1) and multiplexer (2) is synchronous, demodulation multiplexer (2) was carried out the turn-off time that switches in pulse-width signal (10) (t2) from a light emitting diode to next light emitting diode, and
-demodulation multiplexer (2) provides working current to light emitting diode (3), wherein demodulation multiplexer being connected to by the signal of width modulation (10) and a signal output part being connected (22) in light emitting diode (3) pulse-width modulation circuit (1).
2. method according to claim 1, wherein light emitting diode (3) one of at least has at least two light-emitting diode chip for backlight unit (30), and for each light-emitting diode chip for backlight unit (30), the signal of width modulation (10) is guided to light emitting diode (3).
3. method according to claim 1, wherein the signal of width modulation (10) by demodulation multiplexer (2), sequentially guided to described at least two light emitting diodes (3).
4. method according to claim 1, the strength of current that the light-emitting diode chip for backlight unit (30) of wherein said at least two light emitting diodes (3) allows with maximum respectively in the turn-on time (t1) of the signal (10) of width modulation drives.
5. a display device, has:
-pulse-width modulation circuit (1),
-demodulation multiplexer (2), it has at least one signal input part (21) and at least two signal output parts (22), wherein signal input part (21) is connected with pulse-width modulation circuit (1), and demodulation multiplexer (2) has than the more signal output part (22) of signal input part (21), and
-at least two light emitting diodes (3), described light emitting diode (3) is connected with the signal output part (22) of demodulation multiplexer respectively, wherein
-in the work of display device, pulse-width modulation circuit (1) and demodulation multiplexer (2) is synchronous, demodulation multiplexer (2) was carried out the turn-off time that switches in pulse-width signal (10) (t2) from a light emitting diode to next light emitting diode, and
-demodulation multiplexer (2) provides working current to light emitting diode (3), wherein demodulation multiplexer being connected to by the signal of width modulation (10) and a signal output part being connected (22) in light emitting diode (3) pulse-width modulation circuit (1).
6. display device according to claim 5, wherein demodulation multiplexer (2) has control input end (23), and this control input end is connected with the control input end (13) of pulse-width modulation circuit (1).
7. display device according to claim 5, wherein each light emitting diode (3) comprises at least two light-emitting diode chip for backlight unit (30), and wherein each light-emitting diode chip for backlight unit (30) is connected one to one with the signal output part (22) of demodulation multiplexer (2).
8. display device according to claim 5, has at least eight light emitting diodes (3), and wherein power consumption is up to 0.5W.
9. a lighting device, has:
-display device according to claim 5 (100),
-at least one lamp (200), described lamp is connected with display device (100), wherein
-display device (100) is designed to show the duty of described at least one lamp (200).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009007504A DE102009007504A1 (en) | 2009-02-05 | 2009-02-05 | Display device, operating method and lighting device |
| DE102009007504.6 | 2009-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101800028A CN101800028A (en) | 2010-08-11 |
| CN101800028B true CN101800028B (en) | 2014-08-20 |
Family
ID=42091496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010111819.7A Active CN101800028B (en) | 2009-02-05 | 2010-02-05 | Display device, operating method and lighting device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8358219B2 (en) |
| EP (1) | EP2217040B1 (en) |
| KR (1) | KR20100090207A (en) |
| CN (1) | CN101800028B (en) |
| DE (1) | DE102009007504A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017102467A1 (en) | 2017-02-08 | 2018-08-09 | Osram Opto Semiconductors Gmbh | Method for operating a light-emitting device |
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| CN1115935A (en) * | 1991-04-01 | 1996-01-31 | 德克萨斯仪器股份有限公司 | Deformable minute surface device of impulse duration modulating displaying system and method for displaying video data |
| US6188181B1 (en) * | 1998-08-25 | 2001-02-13 | Lutron Electronics Co., Inc. | Lighting control system for different load types |
| CN101242543A (en) * | 2007-02-06 | 2008-08-13 | 三星电子株式会社 | Light source driving apparatus, display device having the same, and driving method thereof |
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| US3983553A (en) * | 1975-05-12 | 1976-09-28 | General Motors Corporation | Appliance remote touch-control panel with sound system |
| US5351685A (en) * | 1991-08-05 | 1994-10-04 | Nellcor Incorporated | Condensed oximeter system with noise reduction software |
| AU667199B2 (en) * | 1991-11-08 | 1996-03-14 | Physiometrix, Inc. | EEG headpiece with disposable electrodes and apparatus and system and method for use therewith |
| EP0844464B1 (en) * | 1996-11-21 | 2003-05-07 | Omron Corporation | Method of and apparatus for displaying measured variables |
| DE29816331U1 (en) * | 1998-09-15 | 1998-12-10 | Dambach Werke Gmbh | LED matrix display device |
| US6217188B1 (en) * | 1999-03-04 | 2001-04-17 | Ani-Motion, Inc. | Color changeable fiber-optic illuminated display |
| DE10140331C2 (en) * | 2001-08-16 | 2003-11-06 | Siemens Ag | Traffic control light signals and method for monitoring the function of such a sign |
| DE102004003698B4 (en) * | 2004-01-24 | 2005-11-24 | Preh Gmbh | Circuit arrangement for controlling bulbs |
| US20050269580A1 (en) * | 2004-06-04 | 2005-12-08 | D Angelo Kevin P | Single wire serial protocol for RGB LED drivers |
| US20060261794A1 (en) * | 2005-05-17 | 2006-11-23 | May Marcus W | Method & apparatus for DC-DC regulation with improved transient function |
| KR100661661B1 (en) * | 2005-07-01 | 2006-12-26 | 삼성전자주식회사 | Display apparatus and control method thereof |
| DE102005059067B4 (en) | 2005-12-08 | 2014-07-10 | FELA GmbH | Capacitive keyboard device |
| DE102007017335C5 (en) | 2007-04-11 | 2017-04-27 | FELA GmbH | Lighting unit with a transparent support plate and light emitting diode |
| US20090033612A1 (en) * | 2007-07-31 | 2009-02-05 | Roberts John K | Correction of temperature induced color drift in solid state lighting displays |
| DE102007040111B3 (en) * | 2007-08-24 | 2008-10-23 | Siemens Ag | Method for starting up a lighting system |
-
2009
- 2009-02-05 DE DE102009007504A patent/DE102009007504A1/en not_active Ceased
-
2010
- 2010-02-02 EP EP10152419A patent/EP2217040B1/en active Active
- 2010-02-04 KR KR1020100010340A patent/KR20100090207A/en not_active Application Discontinuation
- 2010-02-04 US US12/700,650 patent/US8358219B2/en active Active
- 2010-02-05 CN CN201010111819.7A patent/CN101800028B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115935A (en) * | 1991-04-01 | 1996-01-31 | 德克萨斯仪器股份有限公司 | Deformable minute surface device of impulse duration modulating displaying system and method for displaying video data |
| US6188181B1 (en) * | 1998-08-25 | 2001-02-13 | Lutron Electronics Co., Inc. | Lighting control system for different load types |
| CN101242543A (en) * | 2007-02-06 | 2008-08-13 | 三星电子株式会社 | Light source driving apparatus, display device having the same, and driving method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009007504A1 (en) | 2010-08-12 |
| CN101800028A (en) | 2010-08-11 |
| US20100194580A1 (en) | 2010-08-05 |
| US8358219B2 (en) | 2013-01-22 |
| KR20100090207A (en) | 2010-08-13 |
| EP2217040B1 (en) | 2013-04-03 |
| EP2217040A1 (en) | 2010-08-11 |
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